Concrete form



Aug. 28,- 1928.

J. N. HELTZEL CONCRETE FORM original Filed D60, 1925 2 Sheets-Sheet l V V HTM I .7 YIIIII/ l/IIIIIIIII/IIIIIIIII Aug. 28, 1928..

J. N. H ELTZEL CONCRETE FORM 2 Shets-Sheet 2 Original Filed DeG. 1925 gwuenloz Joiarz M1722 izel Patented Aug. 28, 1928.

- UNITED. STATES JOHN N. HELTZEL, OF WARREN, OHIO.

CONCRETE FORM.

Application filed December 8, 1925, Serial No. 74,106 Renewed July 13, 1928.

This invention relates to concrete forms and more particularly to road forms using rails for defining the edges of a concrete road, side-walk or the like, this invention being an improvement upon the concrete form,

disclosed inan application filed by me January 12, 1924, Serial No. 685,811.

A particular object of the present invention is to improve the means for joining and securing the rail ends together, using a stake for each rail end, and a simple and convenient means for simultaneously clamping the two stakes of the joint.

. A further object is to house and protect the'wedging or looking members and their associated parts so that the working parts of the joint will be protected from deposits of cement and thus befree to operate under all conditions of service.

A still further object otthe invention is toso construct the joint elements that they will span the abutting ends of adjacent form sections so as to reinforce the structure and prevent sagging at the oints thereof as well as preventing accidental parting movement of the form sections at said joints.

Other objects will appear in the course of the following description, and the invention resides in certain novel features which are illustrated in the accompanying drawings and will be particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a perspective view showing one embodiment of the invention arranged for use' Fig. 2 is an enlarged sectional elevation of the joint shown in Fig. 1;

Fig. 3 is a transverse vertical section on the line 88 of Fig. 2;

Fig. 4 is a detail perspective view of the looking or wedging member employed to from the upper edges of the upright webs 1 are tread flanges 4, from the outer edges of which depend the lips or hearing flanges 5. These rails are laid end to end and the road or concrete structure is built up between opposlte rails which serve to define the edges of the road, while the flanges 4 definethe surface of the road at the opposite edges.

At each joint, or each place where the op posed ends of alined rails meet or abut, I provide anchoring means comprising a joint member which bridges the ends of the rails and is provided with means for receiving two stakes and through which is mounted a single member for simultaneously clamping both stakes. The joint member comprises an inclined web 6, shown most clearly in Fig. 3, having its upper edge portion formed into an inverted U-shaped tread section comprising a central web 7 and side webs or flanges 8 and 9 adapted to fit snugly between the web 1 and the lip of the rails and against the tread flange 4 of the same, the lower end edge of the inclined web 6 fitting in the angle defined by the base flange 2 and the up standing lip or outer flange 3, as clearly shown in Fig. 3. The joint member includes a pocket element which consists of an upper horizontal web 10 extending longitudinally of the web 6 of the joint member, a lower horizontal web 11 which also extends longitudinally of the web 6, and an outer vertical web 12integral with and rigidly uniting the outer edges of the webs 10 and 11. The inner edge of the web 11 is welded or otherwise intimately united with the web 6 at such a point above the lower edge thereof that the said web 11 will extend across the lip 3, while the upper web 10 has its inner edge portion disposed obliquely, as shown at 18, whereby it may rest flat against the web 6 and be united therewith. preferably by rivets, as indicated at 14. Through the webs 10 and 11, immediately adjacent the vertical web 12 and near the ends of the said webs 10 and 11, slots or openings 15 are formed therethrough to receive the stakes 16, as shown. The stakes are driven into the ground so as to engage or bear. against the upstanding lip or hearing flange 3 of the respective forms, it being noted that the slots or openings 15 will be disposedat opposite sides of the vertical plane in which the meeting ends of the rails or forms abut so that, when the forms are in place, there will be one stake at each end of each rail, The stakes are tapered. attheir lower ends so that they are driven" into the ground they will bind against the flange or hp 3 and, therefore, exert pressure uponthe same and upon the webiti'whieh will tend; to force the joint member into binding engagement with the'rails at their abutting ends and assist inpreyenting accidental separation there'ofl It will be readily noted'that the pocket element defined by vthe webslO, 11* and-1Q isso arrange- 1 upoh the web 6 that pace or open-ended slot l7 is formed through the joint member within the said space or slotmounted a locking; or wedging member 18. This hedging member, in: the illustrated embodiments of the invention; eonsists of an angl tar, having a horizontal web 19 'aiid ''a vertically fidisposed web' 20 extending longitudinally of the'joint member and of greater length than the 'oint member so that its ends pro treat fionith'e' ends at the slot-or space 17 to be engaged b a setting tool, such as a hammer. lhi-oti h the upper horizontal wetqiti otthe locking of wedging member s ator-med parallel, obliquely disposed slots 21 through whit-sh are enga etl the tems tr shanksflz of rivets having their upper; heath athearisgnpon the tgppt surface or the 1O tli'eirlewerheads 24: spaced he the seavat 10 t distance slightly greater than the thickness otthe web 19 where said web. 19 may slide e'asily between the web 10 and the head 24 but w n positively stipperted by the said head 24, It will. be, noted that-the SlOtS land the rivets whieh' support the looking or wedg mg member arra ged in alineme'nt with the respe tive stakes transversely of the joint member so that; the pressure exerted. by and resulting from the engagement of the iiyets tt'ndthe enter walls (if the slots J 21 white distributed to the respective stakes aiid both stakes will be firmly secured H The stakes are preferabty rovitl tt with enlargement or projections 25 near theiifuppifleiid's which, by oont aet with the up er siiriace' of the web 10 of the joint mernber,

win limit the downward movem nt t the stakes and thereby prevent them being buriedto such an extent that theii upper ends would be disposed within the oint memb rs and, eohsequehtly, prove inefficient to hold the 'de vitae against thdwise movement, ore-(wet, these enlargements or rojections iiirnish tenvehitht means for engagement witha pry when it is desired to withdraw the stakes from the glg 'uha and reieast the tot-ms.

In assembling the parts, the joint member is slid endwi'se into 'ehgageinent with the end of the ailor ter -antithe next rail or tot-1h is then brought endwise into enga ement with the'joint member, the oint member bridging the ends of the rails to to 1: ositiw' 1y sup pblb hoth tan ends and prevent sagging at the ioint. The stakes are then driven through the slots or'openings l5 in the pocket section of the joint member, the wedging or looking hey at this time being so disposed that the ends of the-slots 21 nearer the outer vertical web of the said member will be engaged with corresponding ends of thetwo slots are at equal distances from the side edges of the wedging or locking member. Consequently, the said member will always be supported parallel with the stakes or the openings through which the stakes are inserted so that, when the endwisefmovement is imparted to the wedging member, it willsimultaneously bear against the two stakes and clamp them tothe Vertical. web 21 of the. pocket element. It will be readily seen from the feregoing description, taken in connection with the aecompanying drawings, that I have provided an exceedinglysimple mechanism whereby the meeting". ends of the iormrails willbe firmly supported and may be quickly anchimed in lace. It, before theconcrete ma= terial'has been laid, itis' desired to temperaril'y remove one section of a rail or form to permit wagons carrying the Concrete or other road material to nass y. onto the roadbed, the wedging member may be loosened and it will then be a simple matter to withdraw the desired rail. section. "The two stakes may be raised and the joint member then slid endwise so as to be entirely within the rail which is to remain in place, whereupon the rail to be removed may be lifted Verticallywithout interference from any of the securing ele ments. It will also be noted that the joint member is of such form that it completely houses the wedglng or locking member and also covers such slight s ace as there may be between the abutting one s of the rails so that the working parts will be protected from deposit of portions of the cementwhich might flow over the tread flanges oftl'ie rails, the looking elements being, Consequently, always in operative condition.

In Figs; 5 and 6, I have illustrated an embodiment of the inyention slightly diileren't from the previously described embodiment.

In this form of the invention, the basementv ber 30 of the rail term inad'e slightly wider than the base member 2- in the first described form so that the upstanding flange or lip 31 will be in a ertical plane outwardly beyond the yertieal web 12 of the pocket element. The web 32 of the joint member is somewhat longer than the corresponding web 6 illuswhile similar slots or openings 35 are formed trated in Figs. 1, 2 and 3 so that its lower edge may engage in the angle defined by the base flange and the lip 31, as will be understood upon reference to Fig. 6. As a result of this increase in size of the inclined web, the lower edge portion thereof will be disposed below the web 11 and the web 12 of the pocket element, and slots or openings 33 are formed through this extended portion to receive the lower end parts of the stakes 34,

through the base flange 30, the openings or slots 33 and 35 being obviously alined vertically with the openings 15 in the pocket mem her. The same locking member 18 is em ployed and the action is in all respects the same as that in the first described form, with the exception that the stakes pass through the base flange of the rail forms and thereby positively lock the forms or rails to the joint member instead of merely bearing against the outer face of the upstanding lip or flange as in the first described arrangement. This construction also positively prevents accidental parting or separation of the form sections at the abutting ends thereof.

Having thus described the invention, I claim:

1. A concrete form having means for re ceiving two stakes, and a single element arranged to simultaneously clamp both stakes.

2. A concrete form comprising rails. two stakes means for connecting said stakes and rails, and a single element carried by said means arranged to simultaneously clamp both stakes. I

3. A concrete form comprising rails two stakes, means for connecting said stakes and rails and having a slot, and a wedge slidable in said slot to simultaneously clamp both stakes.

4. In a concrete form, a member having means to receive two stakes, and means carried by said member operable with a single operation to simultaneously clamp both stakes.

5. In a concrete form, a member having .means for receiving two stakes, and a wedge carried by said member arranged to simulta neously clamp both stakes.

6. In a concrete form, a member, having means for receiving two stakes and a wedge to engage both of said stakes said member having means for the contact of the wedge arranged to distribute the pressure to both stakes.

7. A concrete form comprising rails, pocket elements engaged with the rails, stakes passing through the pocket elements and engaging the bases of the rails, and a single element carried by the pocket element to simultaneously clamp both stakes,

8. A c ncrete form comprising alined rails,

a joint member slidable between the tread and the base of the rails and bridging the abutting ends of the rails stakes driven through the joint member and engaging the bases of the rails whereby to prevent parting movement of the abutting ends of the rails, and means to simultaneously clamp both stakes.

9. A concrete form comprising rails a pocket member fitted to the rails and having stake-receiving means for two stakes, and a single element movable longitudinally in the pocket member to simultaneously clamp the two stakes.

, 10. A concrete form comprising alined rails a joint member engaged in the meeting ends of the rails and bridging the joint between the same, said oint member being provided with stake-receiving means for two stakes, stakes engaged in said stake-receiving means and engaging the bases of the rails, and means mounted on the joint member for simultaneously clamping both stakes.

11. A concrete form comprising rails, a joint member engaged with the ends of the rails and bridging the joint between the same, a pocket element upon the joint member having a slot extending therethrough longitudinally of the joint member, stakes e aged through the pocket element adjacent the ends thereoi and engaging the base portions of the rails, and a wedge slidable in the slot of said pocket element to simultaneously clamp both stakes.

12. A concrete form forming alined rails a joint member engaged with the rails to bridge the joint between the same, a pocket element on said joint member having means for receiving two stakes and having a slot extending longitudinally therethrough, stakes engaged through the stake-receiving means and engaging the base portions of the rails, fixed supports in the pocket element, and clamping member having spaced parallel obliquely disposed slots engaged with said supports whereby longitudinal movement of said locking member will simultaneously clamp both stakes.

13. A concrete form comprising rails having base flanges and provided with openings through said flanges at their ends and adjacent their outer edge portions a joint member snugly engaging the ends of the rails, a pocket element on the joint member, there being openings formed through the pocket element and the joint member alined vertically with the openings in the base flanges of the rails, stakes engaged through the several vertically alincd openings, and a wedge mounted in the pocket element to simultaneously clamp the stakes.

In testimony whereof I afiix my signature.

J OHN N. I-IELTZEL 

